Shift+P shortcut for Print preview?!?

I can't for the life of me understand why "Print preview" has the shortcut Shift+P. Am I missing something, because I can't write a simple paragraph without a print preview popping up... Is there some way to reassign this?

The shortcut currently assigned to this command will be displayed in the "Current Keys:" box on the right. To change the shortcut,

4. Select the box "Press New Shortcut Key"
5. Press the key combination you wish to assign to the command. For example, to assign the combination [Ctrl+M], hold down the Ctrl key and press M, then release the keys.

If the new shortcut is already assigned, the assigned command will be displayed on the right. If the combination is [Unassigned], then